Anuga

previously the Anuga species recorded in Hong Kong was thought to be Anuga multiplicans

Here's the text from my forthcoming book.....

Anuga indigofera Holloway, 1976 (Plate XX: nn; Figure XX) 茵殿尾夜蛾

Distribution: Thailand, China (GD, HK), Malay peninsula, Singapore, Borneo, Sumatra, Philippines (Holloway, 1985; Jia & Yu, 2018); widespread in Hong Kong.
Status & ecology: frequent, found from February through November in secondary forest, plantation forest, tall shrubland, mangroves, abandoned agricultural land and grassland up to 470m elevation. Reared from Rhus hypoleuca [K. Li].
Similar species: Anuga supraconstricta Yoshimoto (1993), recently recorded from Nan Ling (Wang & Kishida, 2011) has a paler costal third to the h/w, making the dark discal stigma more obvious. The f/w orbicular stigma in A. indigofera has only the basal edge infilled with black, rather than the whole stigmata infilled with black.
Taxonomy: previously listed for Hong Kong as Anuga multiplicans, the South Asian sister species, which Holloway (1985) notes has the same key internal and external morphology.